The Founding Fathers rejected anarchy because they knew that in the long run it would evolve into gang warfare and a form of statism of gang rule.The Founding Fathers were seeking a golden mean of freedom between big government statism and anarchy.

Ayn Rand had a great quote skewering Libertarians like Paul’s mentors- basically she called them (paraphrased) ‘hippies of the right that trade rationalism for political whims and capitalism for anarchy...’